Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
What happens when a, certain quantity of pure ice is completely changed to water at 0oC?
latent heat is absorbed, the mass remains constant, and the volume decreases
latent heat is given out, the mass remains constant and the volume decreases
latent heat is given out, the mass increases and the volume remains constant
latent heat is absorbed, the mass decreases and the volume increases
Correct answer is A
No explanation has been provided for this answer.
400oC
300oC
273oC
127oC
Correct answer is D
\(\frac{P_1}{T_1}\) = \(\frac{ P_2}{T_2}\)
\(\frac{3 \times\ 10^6}{27 + 273}\) = \(\frac{4 \times\ 10^6}{0 + 273}\)
\(\theta\) = 127oC
the specific heat capacity of copper is lower than that of rubber
copper expands more than rubber
the specific heat capacity of rubber is lower than that of copper
rubber expands more than copper
Correct answer is A
No explanation has been provided for this answer.
85.0oC
80.0oC
75.0oC
70.0oC
Correct answer is C
\(\frac{175 - 25}{225 - 25} = \frac{x - 0}{100 - 0}\)
\(\frac{150}{200} = \frac{x}{100}\)
\(x = \frac{150 \times 100}{200}\)
= 75°C
7.2kg
33.2kg
43.2kg
53.2kg
Correct answer is C
R.d = \(\frac{\text {density of petrol}}{\text{density of water}}\)
0.72 = \(\frac{\text{density of petrol}}{1000}\)
Density of petrol =720kgm3
mass of petrol = 720 x 60 x 10-3
=43.2kg